Elasticsearch 6.0.0-rc2, based on Lucene 7.0.1, has been released as the sixth pre-release version leading up to the general availability (GA) of Elasticsearch 6.0.0, intended solely for testing purposes. Users are encouraged to try out this version to familiarize themselves with upcoming features and provide feedback, as indices created in this version are incompatible with the final GA release and upgrading to any other version is unsupported. The release includes minor bug fixes, and Elastic invites users to share their experiences via social media or forums and report any issues on GitHub, contributing to the improvement of the GA release.